The only remaining wing was built in addition to the previous constructions in 1902 by architect Octave Flanneau[1] (1860–1937) in Louis XV style with a mansard roof, for Jules van Dievoet,[2] lawyer at the Belgian Supreme Court, and his wife Marguerite Anspach.

The fief became the property of Vincent de la Boverie, mayeur of the ferrons and master of the forges who rebuilt it and transformed it into a real "pleasure home".

In June 1922, the « Les Journaux Réunis de Lille à Roubaix » company bought the château including its grounds of 35 hectares from Marguerite Anspach, widow of Jules van Dievoet.

Later, Marguerite de la Barre d'Erquelinnes, wife of Count Antoine d'Ursel, acquired the land of Moisnil on 21 March 1939.

Beginning from the general mobilization of September 1938, it served as cantonment to the soldiers in charge of the defense of the valley of the Meuse.